FDOT Traffic Control and Maintenance of Traffic 2 — Questions and Answers
Question 1: What is the minimum width of a temporary lane used for through traffic on an FDOT construction project on an urban arterial?
- 9 feet
- 10 feet
- 11 feet (Correct answer)
- 12 feet
Correct answer: 11 feet
FDOT specifies a minimum temporary lane width of 11 feet for through traffic on urban arterials during construction, balancing safety and construction needs.
Question 2: What does a 'shadow vehicle' provide in an FDOT lane closure operation?
- Guides pilot car convoys through the work zone
- Provides a protective buffer behind the work crew using an attenuator (Correct answer)
- Carries tools and equipment for the MOT crew
- Illuminates the work zone at night
Correct answer: Provides a protective buffer behind the work crew using an attenuator
A shadow vehicle equipped with a truck-mounted attenuator (TMA) follows behind the work crew, absorbing errant vehicle impacts to protect workers.
Question 3: According to FDOT specifications, what is the maximum gap between traffic control devices (cones/drums) in a lane closure taper?
- 10 feet
- 20 feet
- 25 feet (Correct answer)
- 40 feet
Correct answer: 25 feet
FDOT requires a maximum spacing of 25 feet between channelizing devices in a lane closure taper to provide continuous visible guidance.
Question 4: What is the purpose of a 'pilot car' in FDOT construction zone traffic control?
- Carry the MOT supervisor through the project
- Lead traffic through one-way alternating traffic control sections (Correct answer)
- Scout the road ahead for hazards
- Transport flaggers to their positions
Correct answer: Lead traffic through one-way alternating traffic control sections
A pilot car guides alternating one-way traffic through construction zones where the road is reduced to a single lane, ensuring safe passage.
Question 5: Which FDOT certification is required for individuals who supervise or design MOT plans on FDOT projects?
- FDOT Traffic Engineer Certification
- Advanced Work Zone Traffic Control (ATSSA or equivalent) (Correct answer)
- Florida Professional Engineer license only
- OSHA 10-hour Construction Safety
Correct answer: Advanced Work Zone Traffic Control (ATSSA or equivalent)
FDOT requires supervisors and designers of MOT plans to hold an Advanced Work Zone Traffic Control certification, such as the ATSSA or equivalent approved course.
Question 6: What type of sign is used to notify motorists of a road closure ahead on an FDOT project?
- A regulatory sign (white background, red border)
- An orange warning sign reading 'ROAD CLOSED' (Correct answer)
- A guide sign (green background)
- A service sign (blue background)
Correct answer: An orange warning sign reading 'ROAD CLOSED'
Road closed notification in a work zone uses orange temporary warning signs, consistent with the temporary traffic control color scheme.
FDOT Traffic Control and Maintenance of Traffic 2
What is the minimum width of a temporary lane used for through traffic on an FDOT construction project on an urban arterial?